| CJK Strokes | |
|---|---|
| Range | U+31C0..U+31EF (48 code points) |
| Plane | BMP |
| Scripts | Common |
| Assigned | 37 code points |
| Unused | 11 reserved code points |
| Source standards | HKSCS–2001 |
| Unicode version history | |
| 4.1 (2005) | 16 (+16) |
| 5.1 (2008) | 36 (+20) |
| 15.1 (2023) | 37 (+1) |
| Unicode documentation | |
| Code chart ∣ Web page | |
| Note: [1] [2] | |
CJK Strokes is a Unicode block containing examples of each of the standard CJK stroke types.
| CJK Strokes [1] [2] Official Unicode Consortium code chart (PDF) | ||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | |
| U+31Cx | ㇀ | ㇁ | ㇂ | ㇃ | ㇄ | ㇅ | ㇆ | ㇇ | ㇈ | ㇉ | ㇊ | ㇋ | ㇌ | ㇍ | ㇎ | ㇏ |
| U+31Dx | ㇐ | ㇑ | ㇒ | ㇓ | ㇔ | ㇕ | ㇖ | ㇗ | ㇘ | ㇙ | ㇚ | ㇛ | ㇜ | ㇝ | ㇞ | ㇟ |
| U+31Ex | ㇠ | ㇡ | ㇢ | ㇣ | ㇯ | |||||||||||
| Notes | ||||||||||||||||
The following Unicode-related documents record the purpose and process of defining specific characters in the CJK Strokes block:
| Version | Final code points [lower-alpha 1] | Count | L2 ID | WG2 ID | IRG ID | Document |
|---|---|---|---|---|---|---|
| 4.1 | U+31C0..31CF | 16 | L2/03-411 | Goldsmith, Deborah; Muller, Eric (2003-10-31), Unencoded chars in GB 18030 & HK-SCS | ||
| L2/04-161R | N2807 | Suignard, Michel; Muller, Eric; Jenkins, John (2004-06-17), HKSCS and GB 18030 PUA characters, background document | ||||
| L2/04-263 | N2808 | Suignard, Michel (2004-06-17), HKSCS and GB 18030 PUA characters, request for additional characters and related information | ||||
| L2/05-058 | Whistler, Ken (2005-02-03), "C. Changes to CJK strokes block", WG2 Consent Docket, Part 1: Unicode 4.1 Issues | |||||
| L2/05-026 | Moore, Lisa (2005-05-16), "WG2 - Unicode 4.1 Consent Docket (B.1.16.1)", UTC #102 Minutes | |||||
| 5.1 | U+31D0..31E3 | 20 | L2/03-387 | N986 | Cook, Richard (2003-10-26), Chinese Character Description Language (CDL) | |
| L2/03-404 | N985 | Bishop, Thomas; Cook, Richard (2003-10-28), A Specification for CDL -- Character Description Language | ||||
| L2/03-420 | N987 | Bishop, Thomas; Cook, Richard (2003-11-04), Character Description Language (CDL): The Set of Basic CJK Unified Stroke Types | ||||
| L2/04-221 | N2817 | N1096 | Bishop, Thomas; Cook, Richard (2004-06-07), Proposal to add a block of CJK Unified Basic Strokes to the UCS | |||
| L2/04-367 | N2864 | N1097 | Bishop, Thomas; Cook, Richard (2004-10-25), Proposal to add a block of CJK Basic Strokes to the UCS | |||
| L2/06-212 | N3063 | N1180 | Lu, Qin (2006-04-03), Proposed additions to the CJK Strokes block of the UCS | |||
| L2/06-108 | Moore, Lisa (2006-05-25), "C.4", UTC #107 Minutes | |||||
| N3103 (pdf, doc) | Umamaheswaran, V. S. (2006-08-25), "M48.12", Unconfirmed minutes of WG 2 meeting 48, Mountain View, CA, USA; 2006-04-24/27 | |||||
| 15.1 | U+31EF | 1 | L2/21-118R | N2492 | Lunde, Ken; Jenkins, John H. (2021-08-11), Preliminary proposal to add a new provisional kIDS property (Unihan) | |
| L2/22-136 | West, Andrew (2022-07-08), Feedback on Proposals to Encode New Ideographic Description Characters | |||||
| L2/22-191 | N2572 | Lunde, Ken; Jenkins, John; West, Andrew (2022-08-24), Proposal to encode five new Ideographic Description Characters | ||||
| L2/22-227 | SAT Feedback to "Preliminary proposal to add a new provisional kIDS property (Unihan)" (IRGN2492) and "Proposal to encode five new Ideographic Description Characters" (IRGN2572), 2022-08-29 | |||||
| L2/22-228 | Fan, Ming (2022-09-02), Feedback on IRGN2572 "Proposal to encode 5 new ideograph description characters" | |||||
| L2/22-247 | Lunde, Ken (2022-11-01), "29", CJK & Unihan Group Recommendations for UTC #173 Meeting | |||||
| L2/22-241 | Constable, Peter (2022-11-09), "E.1 29", Approved Minutes of UTC Meeting 173 | |||||
| ||||||
The Chinese, Japanese and Korean (CJK) scripts share a common background, collectively known as CJK characters. During the process called Han unification, the common (shared) characters were identified and named CJK Unified Ideographs. As of Unicode 15.1, Unicode defines a total of 97,680 characters.
CJK Radicals Supplement is a Unicode block containing alternative, often positional, forms of the Kangxi radicals. They are used as headers in dictionary indices and other CJK ideograph collections organized by radical-stroke.
CJK Symbols and Punctuation is a Unicode block containing symbols and punctuation used for writing the Chinese, Japanese and Korean languages. It also contains one Chinese character.
Kangxi Radicals is a Unicode block. In version 3.0 (1999), this separate Kangxi Radicals block was introduced which encodes the 214 radicals in sequence, at U+2F00–2FD5. These are specific code points intended to represent the radical qua radical, as opposed to the character consisting of the unaugmented radical; thus, U+2F00 represents radical 1 while U+4E00 represents the character yī meaning "one". In addition, the CJK Radicals Supplement block (2E80–2EFF) was introduced, encoding alternative forms taken by Kangxi radicals as they appear within specific characters. For example, ⺁ "CJK RADICAL CLIFF" (U+2E81) is a variant of ⼚ radical 27 (U+2F1A), itself identical in shape to the character consisting of unaugmented radical 27, 厂 "cliff" (U+5382).
Katakana is a Unicode block containing katakana characters for the Japanese and Ainu languages.
CJK Unified Ideographs is a Unicode block containing the most common CJK ideographs used in modern Chinese, Japanese, Korean and Vietnamese characters. When compared with other blocks containing CJK Unified Ideographs, it is also referred to as the Unified Repertoire and Ordering (URO).
CJK Unified Ideographs Extension C is a Unicode block containing rare and historic CJK ideographs for Chinese, Japanese, Korean, and Vietnamese.
CJK Unified Ideographs Extension D is a Unicode block containing rare and historic CJK ideographs for Chinese, Japanese, Korean, and Vietnamese.
CJK Compatibility Ideographs Supplement is a Unicode block containing Han characters used only for roundtrip compatibility mapping with planes 3, 4, 5, 6, 7, and 15 of CNS 11643-1992.
CJK Compatibility Ideographs is a Unicode block created to contain Han characters that were encoded in multiple locations in other established character encodings, in addition to their CJK Unified Ideographs assignments, in order to retain round-trip compatibility between Unicode and those encodings. Such encodings include:
Ideographic Description Characters is a Unicode block containing graphic characters used for describing CJK ideographs. They are used in Ideographic Description Sequences (IDS) to provide a description of an ideograph, in terms of what other ideographs make it up and how they are laid out relative to one another. An IDS provides the reader with a description of an ideograph that cannot be represented properly, usually because it is not encoded in Unicode; rendering systems are not intended to automatically compose the pieces into a complete ideograph, and the descriptions are not standardized.
Enclosed CJK Letters and Months is a Unicode block containing circled and parenthesized Katakana, Hangul, and CJK ideographs. Also included in the block are miscellaneous glyphs that would more likely fit in CJK Compatibility or Enclosed Alphanumerics: a few unit abbreviations, circled numbers from 21 to 50, and circled multiples of 10 from 10 to 80 enclosed in black squares.
CJK Compatibility Forms is a Unicode block containing vertical glyph variants for east Asian compatibility. Its block name in Unicode 1.0 was CNS 11643 Compatibility, in reference to CNS 11643.
CJK Compatibility is a Unicode block containing square symbols encoded for compatibility with East Asian character sets. In Unicode 1.0, it was divided into two blocks, named CJK Squared Words (U+3300–U+337F) and CJK Squared Abbreviations (U+3380–U+33FF).
Kanbun is a Unicode block containing annotation characters used in Japanese copies (kanbun) of Classical Chinese texts, to indicate reading order.
Enclosed Ideographic Supplement is a Unicode block containing forms of characters and words from Chinese, Japanese and Korean enclosed within or stylised as squares, brackets, or circles. It contains three such characters containing one or more kana, and many containing CJK ideographs. Many of its characters were added for compatibility with the Japanese ARIB STD-B24 standard. Six symbols from Chinese folk religion were added in Unicode version 10.
CJK Unified Ideographs Extension E is a Unicode block containing rare and historic CJK ideographs for Chinese, Japanese, Korean, and Vietnamese.
CJK Unified Ideographs Extension F is a Unicode block containing rare and historic CJK ideographs for Chinese, Japanese, Korean, and Vietnamese, as well as more than a thousand Sawndip characters for writing the Zhuang language.
CJK Unified Ideographs Extension G is a Unicode block containing rare and historic CJK Unified Ideographs for Chinese, Japanese, Korean, and Vietnamese. It is the first block to be allocated to the Tertiary Ideographic Plane.
CJK Unified Ideographs Extension H is a Unicode block containing rare and historic CJK Unified Ideographs for Chinese, Japanese, Korean, Sawndip, and Vietnamese.